Lucknow airport not operational between 10am to 6pm from 1st March to 15th July. Airlines clueless.

Just saw that Lucknow airport is undergoing some carpet change because of which there will be no flights running between 10am to 6pm. Following the notice, I called Air India Express since I had a flight on March 3rd at 1pm but they don’t have a clue and are stating you will be informed of changes 24 hours before the flight and it could be alternate flight or even rescheduled flight. How is one supposed to keep any options. 24 hours is too short a period.